If I am left with my 9mm against two clowns with AR’s?
Take cover, get women and others behind me. Empty magazine into loudest noise close to me. When out of ammo, take a few .223 rounds while a bite the throut out of the Muslim scum.
That was the question. I think anyone in that room that fired back with skill could have diminished the outcome.
If not, then pass the weapon to your next compadre to chase them out.
This is just right for carrying in the trunk and will make short work of ragheads in an urban environment.
A plus is that it uses the same ammo as an AK, which you should have for traveling out in the country or in any long range situation.
Of course UZI or POF has a long line of similar style small weapons in 9mm if you are worried about unleashing 7.62x39mm in the city limits.
If these are too pricey they make these or very similar in .22LR for less than half the price.
Minimum for the glove compartment is a colt 45 1911, or if you want more rounds a Glock 9mm holds 15 or 17.
For CCW anything you like.
Sidearms are for before the first shots ring out. Once you hear gunfire get to a safe location, take cover in a good firing position, whip out the long gun , and wait for the bad guys to come to you.